Rice field automatic irrigation and drainage system and method based on micro-nano air entrapping

Abstract

The invention discloses a rice field automatic irrigation and drainage system based on micro-nano air entrapping. The rice field automatic irrigation and drainage system comprises a water pump and a micro-nano bubble generator, a water inlet of the water pump is communicated with an irrigation water source through a first pipeline, and a water outlet of the water pump is communicated with a water inlet of the micro-nano bubble generator through a second pipeline; a water outlet of the micro-nano bubble generator is communicated to the rice field to be irrigated through a third pipeline; a dissolved oxygen sensor is arranged in the third pipeline, a first electromagnetic valve is arranged on the third pipeline, and the dissolved oxygen sensor and the first electromagnetic valve are respectively connected with a first programmable controller. The invention discloses a rice field automatic irrigation and drainage method based on micro-nano air entrapping. The method comprises the steps that the water pump and the micro-nano bubble generator are started, water in an irrigation water source is pumped into the micro-nano bubble generator, micro-nano bubbles are injected into the water pumped into the micro-nano bubble generator, and water flowing out of the micro-nano bubble generator is injected into the rice field to be irrigated. According to the system and the method, the phenomenon of rice field water quality deterioration after wheat straw returning in the rice-wheat rotation area can be avoided.

Description

technical field [0001] The invention relates to the technical field of irrigation equipment, in particular to an automatic paddy field irrigation and drainage system and method based on micro-nano aeration. Background technique [0002] Straw returning to the field is an agronomic measure that has been widely promoted and applied in recent years, and it is of great significance for cultivating soil fertility and improving crop quality and yield. However, under the rice-wheat rotation farming method in southern my country's rice-growing areas, returning wheat straw to the field has brought new problems in rice irrigation management. For example, the increase in soil organic matter content makes the field water COD (chemical oxygen demand), BOD (biochemical amount) increased, and the water quality on the field surface deteriorated. This is because, during the flooding process of paddy fields in rice-wheat rotation areas, wheat straw decomposes naturally in the water environmen...

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Problems solved by technology

[0003] The purpose of the present invention is to provide an automatic paddy field irrigation and drainage system and method based on micro-nano aeration, so as to solve the problems in the above-mentioned prior art, avoid the deterioration of the water quality of the paddy field after the wheat straw is returned to the field in the rice-wheat rotation area, and cause damage to the growth of rice. occurrence of injury

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